After sorting the net income values so the value in rank 1 is highest income, rank 2 is the next-highest, etc., then the graph of net income vs rank gives me a: ???

(This may be a question more about information graphics than about math -- is there some other site, perhaps Graphic Design, that is a better place for this kind of question than Math.StackExchange?)

My understanding is that Zipf's law often applies to such graphs.
Ideally I'd like a name for all such graphs, whether or not Zipf's law applies to them.
What do you call such a graph of value vs rank of the value?